Speed sensor, function - GF27.19-P-5127-04N
Transmission 722.9 in model 171.4, 203, 209, 211, 215, 219, 220, 230, 463.303/340/341 turbine speed sensor
A permanently magnetized pole wheel (ring magnet (1)) and the turbine speed sensor (VGS) (Y3/8n1), which consists of magneto-resistive elements, are used to record the turbine speed. A magneto-resistive element changes its resistance under the influence of a magnetic field. The ring magnet (1) is stuck onto an aluminum ring plate and is connected with a ring gear of the Ravigneaux set.
Magnetic field changes occur due to the rotary motion of the ring gear and as a result a resistance change occurs in the magneto-resistive elements An electronic analysis system transmits this information to the fully integrated transmission control (VGS) control unit (Y3/8n4). By using this speed recording system the measurement can take place over a greater distance than with the Hall sensor.